Ureteral function in pregnant women

Ureteral peristalsis in five pregnant patients with signs of acute renal outflow obstruction was studied with the aid of a new technique for recording intraureteral pressure (ureterometry). With this technique it is possible to record the intraureteral pressure at three different levels in the ureter simultaneously. The rate of propagation and direction of the peristaltic waves can thus be determined. Retrograd peristalsis was found in three of the five patients and in one patient and in one patient no peristaltic activity was present at all. The fifth patient demonstrated normal antegrade peristalsis. The findings at renography in the acute stage were in accordance with the ureterometric data.

supporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Abnormal Ureteral Peristaltic Activity During Pregnancy

Ulmsten

1977

“…Dilatation is much more common on the right side (76 per cent right-sided, 35 per cent bilateral) (13), which may be due to a cushioning effect of the sigmoid colon or to the more lateral position of the left ureter compared with the right (5). A correlation presumably exists between the greater frequency of right-sided pyelonephritis in pregnancy and the dominance of rightsided dilatation (11). The dilatation of the upper urinary tract in pregnancy has also been suggested as being due to a hormone effect (4), analogous to ureteral dilatation after oral contraceptives (7).…”

Section: Discussionmentioning

confidence: 99%

Complicated hydronephrosis of pregnancy

Kinn

1981

“…When repeated before delivery, the latest renodieted by pressure recordings which reveal a bi-graphy was used for comparison with the post-delivery renography. In 24 cases this was performed within lateral increase in t o n u s of t h e u p p e r urinary tract 8 days post during pregnancy (21). which finding, however, the interval was 9 to 15 days.…”

Section: According T O Another Theory T H E Dilatation Ismentioning

confidence: 99%

The Diagnostic Value of Renography in Suspected Obstruction of the Urinary Tract During, Pregnancy

Bergström

1975

Abstnrct. The renographic pattern of excretion in 93 pregnant women with clinically suspected obstruction of the urinary tract was not found to differ significantly from what could be expected on the basis of previous reports concerning "normal" pregnancy. It is concluded that in pregnancy the renographic diagnosis of possible "pathological" urinary tract obstruction is seriously impeded by the very high incidence of impaired excretion of ''physiological'' character, especially on the right side. In cases of pain suggesting urinary tract obstruction, f i e finding of even severely impaired excretion does not conclusively establish an etiological relationship. The main importance of renography is to exclude or confirm abnormalities of renal uptake function which may require further investigation or treatment during, or after, pregnancy. Immediately following delivery, persisting renographic impairment of excretion suggests an obstruction of "pathological" significance.